Stop-casting.



J. F. OCONNOR.

STOP CASTING.

APPLICATION FILED NOV. 16. ms. RENEWED MAR. 4. ma.

1 ,26 1 ,5 99. Patented Apr. 2, 1918.

INVENTOR. I W TNESS Ja/mF0&/zrwr Rb ATTORNEY ED STATES ATENT OFFICE.

JOHN F. O'CONNOR, OF CHICAGO, ILLINOIS, ASSIGNOR TO WILLIAM H. MINER, OF

CRAZY, NEW YORK.

STOP-CASTING.

Speciflcationof Letters Patent.

Patented Apr. 2, 1918.

Application filed November 16, 1916, Serial No. 131,618. Renewed March 4, 1918. Serial No. 220,381.

To all whom it may concern:

Be it known that I, JOHN F. OCoNNoR, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Stop-Castings, of which the following is a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to improvements in stop castings.

The object of the invention is to provide a stop casting for draft riggings having great strength and substantially free from casting stresses, the casting bem so designed that it may be molded wit out the use of cores and is provided with diagonally arranged bracing and strengthening convolutions.

In the drawing forming a partof this specification, Figure 1 is a side elevation of an improved casting illustrating one embodiment of my invention. Fig. 2 is a horizontal sectional view taken on the line 22 of Fig. 1. And Figs. 3, 4, 5 and 6 are vertical sectional views of the casting and taken on the lines 33, H, 55 and 66, respectively, of Fig. 1.

In said drawing, the casting which is designated generally by the reference A, is shown of the form adapted for a tandem draft rigging and is provided with a front main shoulder 10, front intermediate main shoulder 11, rear intermediate main shoulder 12, rear main shoulder 13, and corresponding limiting stop shoulders 14, 15, 16 and 17. All of said shoulders are formed in the casting by vertically arranged bends or convolutions whereby the casting has a web of substantially uniform thickness and is of great strength. Located between the sets of main stops are diagonally arranged convolutions 18, 19, 20'an'd 21, the bottoms of said convolutions extending to the back plane of the casting as indicated at 2222 in Figs. 3 and 4. The convolutions 18, 19, 20 and 21 cross each other or coalesce in the line of the limiting stops so that, in effect, the pairs of convolutions 18 and 19 and 20 and 21 form crosses or Xs. The ends of all said convolutions 18, 19, 20 and 21 are extended slightly into the main stops, as indicated at 2323, but leaving sufiiciently large bearing surfaces on said main stops for cooperation with the usual followers. Where it is necessary to rivet the stop castings to the metal sills of the car, said convolutions 18, 19, 20 and 21 are slightly enlarged as indicated at 2424 to provide clearance for the usual riveting tools. At the ends of the casting, the web is depressed into the back plane of the casting as indicated at 25 and substantially triangular shaped bosses 26-26- formed behind the front and rear main stops 10 and 13 at the centers thereof. By forming said depressed portions 25, suitable riveting areas are provided at the ends of the casting, as is apparent from an inspection of Fig. 1.

Although the convolutions 18, 19, 20 and 21 extend across the limiting stops and thereby eliminate parts of said stops, nevertheless the limiting stops are of sufficient vertical height, particularly at the wedge-v shaped portions indicated at 27, to provide proper guiding surfaces for the springs.

It will be noted that all portions of the casting are of substantially the same thickness and the convolutions both vertical and diagonal are so arranged as to eliminate the necessity of cores although cores may be employed if desired at certain portions. By maintaining the casting of uniform thickness throughout, casting strains are minimized as are also the annealing strains since all portions of the metal will cool at a substantially uniform rate. The casting is of great strength and well adapted for the severe service to which it is necessarily subthe metal remains comparatively thin, the

effect of the convolutions is to make the casting of relatively great thickness.

I claim:

1. A stop casting having a plurality of vertical stops and diagonal bracing convolutions formed within the casting.

2. A stop casting having the web thereof provided with a plurality of main stops and diagonal convolutions between said main stops,

3. A stop casting having the web thereof provided with a plurality of main stops and diagonal convolutions between said main stops, the ends of said diagonal convolutions extending partly into said main stops.

4. As an article of manufacture, a stop casting having a plurality of main stops and a plurality of diagonally extending bracing convolutions between the main stops, said diagonal convolutions'forming crosses between the stops.

5. As an article of manufacture, a stop casting having a. plurality of mam stops and limiting stops between the main stops, said casting having also a plurality of diagonally extending convolutions between the main stops and crossing said limiting stops.

6. As an article of manufacture, a. stop casting for draft riggings having a web of memos substantially uniform thickness throughout, said web being formed with a series of vertical convolutions forming main and limiting stops, the web being provided also with a series of diagonally extending-bracing convolutions which cross the limiting stops and have their ends extended partly within the main stops.

In witness that I claim the foregoing I have hereunto subscribed my name this 11th day of Nov. 1916.

JOHN F. OCONNOR. 

